Brushless dc motor controller overheating or smoke exactly how to do? Today let's discuss together. Brushless dc motor controller overheating or smoke fault processing method: 1. Power supply voltage is too high, make the core magnetic flux density supersaturation caused by high temperature brushless dc motor controller: if the supply voltage is over standard lot should be resolved with power supply department. 2. Power supply voltage is too low, brushless dc motor controller under rated load temperature rise too high: if caused by the power line voltage drop is too large, can replace the coarser the power cord; If it is the power supply voltage is too low, can contact to the power supply departments, improve the power supply voltage. 3. Been burning, burning line, core increased iron loss: do core examination test, repair core, troubleshooting. 4. Rotor core facies rub: check the cause of the problem if the bearing clearance overrun, should replace new bearing, if the axis of bending, the need to investigate and handle, should handle the core core loose or deformation, eliminate the malfunction. 5. Effect on surface with dirt or foreign body, winding brushless dc motor controller heat: cleaning or washing dc brushless motor controller, and makes the brushless dc motor controller ventilating ducts are clear. 6. Brushless dc motor controller overload or drag the production of mechanical resistance is too large, makes the brushless dc motor controller fever: drag mechanical failure, reduce resistance, according to the current instruction, such as more than rated current, to reduce load, replace the larger capacity of brushless dc motor controller or adopt measures to increase. 7. Brushless dc motor controller is frequent starting or amounts of positive &negative: reduce starting brushless dc motor controller and the number of positive and reverse or replace the appropriate brushless dc motor controller. 8. Cage rotor broken bar or wound rotor winding wiring loose, brushless dc motor controller rotor heating under rated load, high temperature brushless dc motor controller: find out the fault and loose, repair welding or twist fixed screw again. 9. Winding interturn short circuit and short circuit and winding grounding: according to the data in serial number 1. 10. Inlet air temperature is too high: check device if there is a failure of the cooling system, procuratorial ambient temperature is normal. 11. The fan fault, poor ventilation: check whether the fan brushless dc motor controller is damaged, whether the blade deformation or fixed. Replace the fan when necessary. 12. Two phase brushless dc motor controller operation: check dissolved silk, switch contact point, troubleshooting. 13. Rewind after winding dipping bad: to take the second impregnation process, had better use vacuum impregnation. 14. Higher environmental temperature or blockage in a brushless dc motor controller ventilation: improve the environment temperature, cooling measures, isolate the brushless dc motor controller near the high temperature heat source, avoid the brushless dc motor controller in sunlight exposure. 15. Winding connection error: Y connection brushless dc motor controller misconnection into delta connection, or delta connection brushless dc motor controller misconnection into Y link to correct wiring. Behind will continue to share relevant knowledge. If you have further questions about the brushless dc motor controller, please consult our online.